Home / 1,939.37-2,676.34-1,055.15

Finding the Fourth Proportional to 1,939.37, 2,676.34 and 1,055.15

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Solution

The fourth proportional to 1,939.37, 2,676.34 and 1,055.15 is: 1,456.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,939.37 : 2,676.34 = 1,055.15 : x
  2. Step 2: Convert to fraction form
    1,939.37/2,676.34 = 1,055.15/x
  3. Step 3: Cross multiply
    1,939.37x = 2,676.34 × 1,055.15
  4. Step 4: Simplify right side
    1,939.37x = 2,823,938.12
  5. Step 5: Solve for x
    x = 2,823,938.12/1,939.37
  6. Step 6: Final answer
    x = 1,456.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.